%0 Journal Article %A Aurell, Erik %T Finding eigenvalues of the period-doubling operator from the characteristic equation %J Annales de l'I.H.P. Physique théorique %D 1990 %P 467-477 %V 53 %N 4 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPA_1990__53_4_467_0/ %G en %F AIHPA_1990__53_4_467_0